: Users can calculate density, enthalpy, entropy, thermal conductivity, and viscosity.
While accessing software for free might seem appealing, the risks associated with unofficial sources often outweigh the benefits. For critical engineering work, accuracy and reliability are paramount, making licensed, professional software tools like REFPROP indispensable. Exploring official channels, discounts, or alternative open-source tools is recommended.
Cybercriminals know engineers need REFPROP. They embed Trojans, keyloggers, and ransomware into "cracked" installers. A 2022 study by a cybersecurity firm found that 1 in 3 "engineering software cracks" contained a Remote Access Trojan (RAT). refprop 91 free
Note that NIST has advanced well past version 9.1. The current flagship release is REFPROP 10.0, which features vastly improved equations of state, expanded fluid databases, and better compatibility with modern 64-bit operating systems. Best Free and Open-Source Alternatives to REFPROP
Developed by the National Institute of Standards and Technology (NIST), REFPROP (short for REFerence fluid PROPerties) is the gold-standard software for calculating the thermodynamic and transport properties of pure fluids and their mixtures. It is the tool of choice for engineers, scientists, and researchers in industries like HVAC&R, chemical processing, and power generation. : Users can calculate density, enthalpy, entropy, thermal
(REFerence fluid PROPerties) is a legacy version of a software program developed by the National Institute of Standards and Technology (NIST) . It is used to calculate the thermodynamic and transport properties of industrially important fluids and their mixtures. Availability and Free Versions
RefProp is a comprehensive software package developed by the National Institute of Standards and Technology (NIST) for calculating thermodynamic properties of fluids and mixtures. The software is based on a robust database of experimental and predicted data, ensuring high accuracy and reliability. RefProp's user-friendly interface allows users to easily input conditions, select fluids or mixtures, and retrieve a wide range of thermodynamic properties. A 2022 study by a cybersecurity firm found
: Websites offering "free" full versions of REFPROP 9.1 are often distributing unauthorized copies or malware . 🛠️ Legitimately Free Alternatives
: Released in 2013, this version introduced a 64-bit DLL and expanded the database to 121 pure fluids. It replaced older NIST 12 and 14 databases and is widely used for interfacing with Excel, Python, and MATLAB.
💡 For high-stakes engineering, rely on a licensed copy or use CoolProp as a reliable, free, and legal substitute. If you’re interested, I can help you: Set up CoolProp in Excel or Python Find the official NIST purchase page Compare RefProp vs. CoolProp for your specific project